Aircraft Oxygen Systems Flashcards
What is the Percentage of gases that comprise the atmosphere?
21% Oxygen
78% Nitrogen
1% other gases
The percentage of water vapor in the atmosphere rarely exceeds….
%5
How is human circulation and respiration affected by flying?
High altitudes causes lower pressure going into the lungs and oxygen being absorbed in the bloodstream, causing Hypoxia.
What is Hypoxia?
Lack of Oxygen to the human brain and body.
What does the lack of oxygen do to the body and brain?
sluggish mental and physical functions of the body, May cause passing out and death.
At what altitude does the oxygen in the bloodstream start to diminish?
@7,000 ft above sea level
What causes hyperventilation(breathing to heavily)?
High levels of carbon dioxide in the bloodstream. Carbon dioxide regulates the intake of oxygen intake into the bloodstream.
What is carbon monoxide poisoning how does it happen in flight?
Carbon monoxide gases come incomplete combustion of hydrocarbon fuels. If exhaust makes it into cabin thru malfunctions of manifolds.
Why are cabins of high flying transport category ACFT Pressurized?
To provide Oxygen and Comfort to passengers.
Oxygen leak check is checked using?
Oi-less Soap and Water
List three methods Oxygen is Carried on aircraft.
Press Bottles, LOX, and Oxygen Generators(solid)
As altitude increases atmospheric pressure …..
decreases
What color are Oxygen bottles?
Green
Aviation grade Oxygen is what percentage pure?
%99.5
How are oxygen systems serviced?
Leak testing, with leak check fluid(soapy water free of oil), by blocking the flow
Why should drainage of oxygen systems be done outside?
To avoid substances that may cause explosion or fire when combined with pure Oxygen
How should an oxygen tank be drained and refilled?
Always follow manufacturers instructions . It should be done slowly to prevent overheating or explosion.
What should be used to purge the Oxygen system of moisture?
Dry air and nitrogen can be used to blow through the system, But a final purge should be done with pure oxygen.
What is LOX
Liquid Oxygen
What is the purpose of chemical Oxygen(Solid) in a cabin?
Used in unpressurized aircraft, military planes, as a backup for pressurization. Not seen much in commercial aviation.
What happens in case of depressurization in aircraft airliner?
Backup Oxygen generator system give passangers 10-20 minutes of Oxygen thru a mask. Plane drops to lower altitude.
What are some devices used as carbon monoxide detectors?
Chemical tabs(stickers) that change colors. And electronic carbon monoxide detectors.
